The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 10, 2001
Filed:
Jul. 02, 1998
Applicant:
Inventors:
Caroline Clinton, Roughgrange, IE;
Trevor R. Spalding, Cork, IE;
Andrew Mark Connell, Cork, IE;
John Barrett, Cork, IE;
James F. Rohan, Cork, IE;
Assignee:
Littelfuse, Inc., Des Plaines, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2/120 ; H01L 2/144 ; H01L 2/131 ; H01L 2/1469 ;
U.S. Cl.
CPC ...
H01L 2/120 ; H01L 2/144 ; H01L 2/131 ; H01L 2/1469 ;
Abstract
A method of providing a semiconductor device with a selectively deposited inorganic electrically insulative layer, the device having exposed semiconductor surfaces and electrically conductive metal end terminations, in which the device is saturated in a phosphoric acid solution to form a phosphate layer on the exposed surfaces of the semiconductor but not on the metal end terminations. The device is thereafter plated by a conventional plating process and the plating is provided only on the end terminations.